Relier Pairs Vocabulary sleeping habitsVersion en ligne Match the expression with the correct definition par Pedro Torres Hernandez 1 feel drowsy 2 nod off 3 toss and turn 4 drift off 5 be sound sleep 6 to take a power nap 7 be wide awake 8 sleep like a log 9 be fast asleep sleeping in a way that makes it difficult to wake you to move about and turn over in bed because one is unable to sleep tossing and turning all night you gradually fall asleep to sleep very soundly , so well that noises don't even wake you up. Someone who is fully awake and unable to sleep fall asleep unintentionally. sleepy and having low energy sleeping deeply to take a brief sleep during the day in order to improve one's alertness and ability to work efficiently throughout the remainder of the day